I just made my first pot of bone broth ever - I made my family save me all their lamb bones from dinner and threw them in a pot. I seriously could have drunk the stuff on it's own, it smelled so umami and delicious. I did, actually, that night, because I couldn't go to sleep, so I figured the hot broth would make me sleepy.
However, today I chipped the white fat off the top of the broth (it gelled really well) and used it to fry sliced onions for French onion soup and some garlic until it was soft, then added the broth with some water and herbs and simmered it. It's really good - I've had it with my breakfast and lunch. I think that's what I'll end up doing from now on, French onion is easily my favorite soup.